Dispenser for fluid material



G. A. LOEBEN.

msPEN'sER FOR num Mmmm.

I APPLICATION FILED AUG.6| 1919. 1,403,426. Patented Jan. 10, 1922.

2 SHtLlS-SHEET 2- UNITED STATES PATENT OFFICE.

GUSTAVE A. LOEBEN, 0F PHILADELPHIA, DENNSYLVANIA, ASSIGNOR TO vPREMIER -AIPLIANOE COMPANY, OF WILMINGTON, DELAWARE, A CORPORATION OF DELA- WARE. l

Specification of Letters Patent.

DISPENSER FOR FLUID MATERIAL.

Patented Jan. 10,1922.

Application led August 6, 1919. Serial No. 315,616.

T 0 all trito-m, it mag/- concern:

Be it known that I, GUsrAvE A. LOEBEN, a. citizen 0f the United States, residing in 'Philadelphia, Pennsylvania, have invented certain Improvements 1n Dispensers for Fluid Material, of which the following is a specification.

My invention relates to that type of fluid dispensers which are intended for injecting charges of iuid soap, paste, lather or the like (hereinafter for convenience referred to as soap into a shaving -brush or other receiver and especially to such dispenser in which the fluid soap isv forced from a reservoir by means of a plunger acted upon by a rotating feed screw, the object of my invention being to prevent leakage of the soap into the brush or around the plunger during the intervals between the feeding of the successive charges to'the brush.

Vith this object in view my invention comprises rst, means for releasing the fluid soap from pressure during such intervals, and second, means for automatically closing during, said intervals, the valve which governs the discharge of soap into the brush.

In the accompanying drawings Fig. 1 is a vertical sectional view on an enlarged scale of a shaving brush having combined therewith a fluid dispensing device constructed -in accordance with my invention the parts being shown in the positions assumed by them when the soap is relieved from pressure;

Fig. 2 is a similar view illustrating the parts in the position assumed by them when the soap is being subjected to pressure ;l

Fig. 3 is an inverted sectional plan view on the line 3 3,.Fig. 2, looking in the direction of the arrow m;

Fig. 4 is a similar view on the same line, looking in the reverse direction, and

Figs. 5, 6 and 7 are vertical sectional views of the forward portion of a dispenser illustratmg certain modifications of my invention.

Referring to Figs. 1 to 4 of the drawing, 1 represents a tube or reservoir in which is adapted to operate a plunger 2 with flexible packing 3 and central nut 4, the latter engag-ing the threads of a central screw stem 5 whose rear or upper end is swiveled to the central portion of an operating cap 6, the

.latter having a beaded edge 7 knurled or otherwise roughened so as to facilitate ma- 'central opening through which the rear end of the screw stem 5 projects, as shown.

That portion of the screw stem 5 adjacent to the inner or forward face of the cap 8 has suitably secured to it, so as to rotate therewith, an annular flange 10 and upon the rear face of the latter are radially disposed cams 11 with bevelled faces as shown in Figs. 1, 2 and 4, said cams cooperating with cam faces 12 formed on the inner or forward face of the cap 8 as shown in Fig. 3. A slight forward movement is therefore imparted to the screw stem` 5 when the cams engage one another at the beginning of the turning movement of said screw` stem, a. spring 13 interposed between the cap 6 and cap 8, as shown in Figs. 1 'and 2, serving to impart like rearward movement to said screw stem when the. cams-11 pass out of er1- gagement with the cams 12.

' Normally the cam faces 11 and 12 bear the non-engaging relation to one another shown in Fig. 1, the cap 6l and screw stem 5 being pressed rearwardly by the spring 13 so as to draw the plunger 2 rearwardly and release 'from pressure the fluid mass of soap which is contained within the reservoir 1 in advance of said plunger, but as'soon as the screw stem 5 commences to turn the cams 11 will engage the cams 12 and will force the screw stem 5 forwardly, thus carrying Forwardly into the central portion of this mass of bristles projects a tube 17, open at its rear end and having a contracted opening 18 at its forward end, the rear end of the end of a valve rod 21 whose forward end ispointed and cooperates with the seat formed by the contracted forward end of the tube 17 to constitute valve mechanism whereby the forward fiow of soap into the brush 1s permitted or cut off as required, the valve rod 21 occupying a continuously fixed position but the tube 17 moving forwardly when the central portion of the diaphragm 19 is moved forwardly by the pressure of the soap thereon, said diaphragm 19 being moved rearwardly by means of a spring plate 22 when said pressure is released.

lVhen the tube 17 is moved forwardly its forward end is carried away from the conical end of the valve rod 21 and flow of soap into the interior of the brush is permitted, but as soon as the soap is released from the forward pressure of the plunger 2 the diaphragm 19 is moved rearwardly by the spring plate 22 and the comcal end of the valve rod closes the opening in the forward end of the tube 17 so as to effectually cut off any further fiow of soap into the brush at that time.

By reason, therefore, of this automatically acting valve construction in connection with the previously described movements of the plunger 2 all leakage of soap into the brush or around the plunger during the intervals between `the successive feedings of soap to the brush is effectually prevented.

The time occupied in effecting the engaging and `releasing movements of the plunger in respect to that occupied in effecting the feeding movements of said plunger are dependent upon the construction and relation of the cam surfaces 11 and 12. As shown each of-these cam surfaces is disposed on opposite sides of the axis of the screw stem 5, so as to equalize the pressure thereon, the cams 11 being in the form of relatively narrow ribs but each of the cam surfaces 12extending throughout about one-half of a circle. hence, afterV the first engagement of the cams which causes the plunger to be projected into contact with the mass of soap there will be about one-half turn of the screw stem 5 and a corresponding forward feed of the plunger before the cams are disengaged and the plunger is withdrawn from contact with the soap, and b v varying the character and extent of the cam surfaces this time element may be likewise varied as may be desired.

In those embodiments of my invention shown in Figs. 5 and 6 the arrangement of the parts constituting the valve mechanism' is reversed as compared with the construction shown in Figs. 1 and 2, the tube 17 a being the fixed member and the valve rod 21 the movable member. Said valve rod is carried by the diaphragm 19a, hence the movements of the latter are also the reverse of those of the diaphragm 19, the central portion of the diaphragm 19a moving backwardly when pressure is imparted to the soap, and forwardly when such pressure is released.

, This necessitates pressure of the soap upon the forward instead of upon the rear face of the diaphragm, and consequent free flow of soap from the reservoir to said forward face. In the construction shown in Fig. 5 this iow is permitted by passages 30 in the wall of the diaphragm holder, and in the construction shown in Fig. 6 by passages 31 and 32 formed in the tubular rea'r end of the valve rod 21a, which is open at its rear end to the soap in the reservoir, and plays.

in a stuffing box 33 on the forward head of the tube 1. Free flow of air into or from the chamber between the diaphragm 19a and the member of the fixed structure towards and from which it moves in action, is` permitted by oneor more vent openings 84.

In the construction shown in Fig. 7, however, the flexible diaphragm is dispensed with, the rear end of the valve rod 2lb being mounted in the central portion of an elastic spring fingered disk 19b disposed in the forward end of the reservoir, and acted upon directly by the forward end of the screw stem 5 as the latter is projected by the cam action before the beginning of each feed, the elasticity of the ,disk also causing it tofollow t`he valve stem in its rearward movement.

In this construction, also, the valve and valve seat are so disposed that the valve opens on the forward movement of the valve rod, and closes on the rearward movement of the same.

The means employed for imparting longitudinal movement to the screw stem may be independent of those for imparting rotating movement thereto but the construction shown is preferred.

I claim:

l. The combination, in a dispenser for fluid material, of a reservoir, means for imparting pressure to the material therein, a flexible diaphragm, means for fiexing the same as the pressure is applied and removed, and valve mechanism comprising a -valve and valve seat. one of said members being carriedby said diaphragm.

2. The combination, in a dispenser for fluid material. of a reservoir, means for imparting pressure to the material therein, a flexible diaphragm, means for flexing the same as the pressure is applied and removed, and Valve mechanism comprising a valve, and valve seat, one of said members being carried by said diaphragm and the other being fixedly mounted.

3. The combination, in a dispenser for fluid material, of a reservoir, means for imparting ressure to the material therein, a flexible iaphragm acted upon by the fluid under pressure, and valve mechanism comprising a valve and valve seat, one of said members beine carried by said diaphragm.

4. The combination, in a dispenser f'or fluid material, of a reservoir, means for imparting ressure to the material therein, a flexible iaphragm acted upon Aby the fluid under pressure, and valve mechanism comprising a valve and valve seat, one of said Vmembers being carried by said diaphragm,

and the other being lixedly mounte 5. The combination, in a dispenser for iluidmaterial, of a reservoir, means for imparting pressure to the material therein,a flexible diaphragm, means for flexing' the 'same as the pressure is applied and removed, and valve mechanism compilising va discharge tube with valve seat therein,y and a valve coacting therewith, one of said valve members being carried by said diaphragm.

6. The combination, in a dispenser for fluid material, of a reservoir, means for impartingpressure to the material therein, a

In testimony whereof, I have signed my name to this specification.

GUsTAvE A. LoEBEN. 

